Llewellyn staltclrbt



Cl L STANQUFF. PISTON.

Mmc/mon msn mmh s, 191s.

523%29535 Y Pim'v Em'. 4, 1919. l

Z SHEETS- SHEET 2.

i lib" M i,

stresse esser CLFTN LLElE-LYN STANCLIFF, 0F BKERSIELD, CALEFGBNE.

Plisson. i

To all whom 'it may' Concern Be it liown that @Lieren L. STANCLIFF, acitizeii'oii the United States, and e resident of Balnerseld, in'the county of Kern and State of California, have invented certain new and useful improvements in Pistons, ot Which the following is a speciiication.

My invention is en improvement in pistons, and has for its objeetto provide e detachable connection between the piston and the piston rod, bynieans of which a. new piston can be fitted to the cylinder Without disassembling 'the motor, or loose bearings, and like troubles may be remediedV from the top ofthe piston, and wherein the piston grooves and rings may be cleaned from carbon without removing thepistoii from thecylinder. K

In the drawings:

Figure l is a. section on the line l-l of Fig. 2;

Figs. 2, 3 and 4 are sections on the lilies 2-2, 3-3 and 4e-l, respectively, of Fig. l, Figs. 3 and et looking in the direction of th arrows adjacent the line;

Fig. 5 is a perspective View of the enge for the Wrist pin; and

Fig. 6 is a'perspective view of the outer end of the cylinder.

ln the present embodiment of the invention, the cylinder l, which is of the usual cup shape, having its outer end closed, as indicated at 2, and its inner end open, is connected to the crank shaft 3 bythe piston rod Ll, the said rod having a sectional bearing 5 for engaging the crank shaft and a sectional bearing 6 for engaging the wrist pin 7.

The sections of the 'bearing 5 nre secured together by means of the usual screw bolts 8, and the lsections of the bearings 6 are secured together iby threaded stems 9 which extend from the inner section ot' the bearing which is integral with the piston rod through obenings in the outer section of the bearing, and the said stems are engaged by nuts 10 which are locked on the stems, as shown.

' Each end of the wrist pin 7 vengages Within a bushing l1 in a bearing sleeve 12 in the cage, the said cage consisting, as shown more particularly in. Figs'. 2, 3, 4 and 5, of/a cy'- lindrical or ring shaped body 13 of less diameter than the piston and having inwardly and outwardly extending reinforcing Webs le 'and l5 at its longitudinal center. Four sockets 16 extend 'from the cage longitudinally of the piston, earch of the sockets being mternaly threaded as shown in' Fig. 2,v and Specification of Letters atent.

eppncenon sie@ Merch 5, isis. 'serial no. 220,543.

the said sockets :tre connected end reinorced by Webs 17 and 18, the Webs l?" en 2l' in the bottoms or' the depressions and into the openings 19. Here they nre engaged by vnuts 22, a Washer Q3 being arranged beneath each nut. `Each stein 20 has an internally threaded bore at its outer end, for en gegenient by e; lock screnv 245. llilashers are arranged beneath the heads oi' the leek yscrews 24C end the seid Washers are of e eine to cover the openings 19, shown more particularly at the right of Fig. lt will noticed. that the bea-ring sleeves l2 end the bushings il have registering openings 9G and 27, respectively, which permit oil to passtfroin the interior of the piston the ends of the Wrist pin 7, so that the said pin is thoroughly lubricated.

Nith the improved piston, whenever it necessary for any reason to detach. the pistion from the piston rod it is only necessary to release the screws 2l, after which the i. .its Q2 ina-y lbe disengaged from the steine 2Q, and the piston is released from the cage end the piston rod.

ln order to remove the piston end repis it with e new piston, or to ren'iove place the old piston, it is not :nece u, disassemble the motor, since the 'piston inn-y be detached from its outer end and 'while still in place in the cylinder. 'Since the open-- ings 19v are spaced at equal distances spart from eachother and are similarly arrange with respect to the piston the piston may be given a quarter turn Whenever desired, thus making the Wear on the sinne incre uniform. and lengthening the life of the saine. Furthermore, the pistons can be cast or molded Without cores, thus decreasing the iirst cost oi' the same, and they can be made lighter than the usual piston, because the cage may be nia-de from aluminum or pressed steel or cast iron. If the bearings are Worn out 'they een replaced Aand if the wrist pin is worn it can be replaced Without disassein'bling motor,

n and e' new'p'ston can be inserted without diseissembling motor.

lfoaim: t y y l. h1 combination With-fthe lplston, the

piston rod, and the Wrist pin, ot' a detach# f nble connection between the said pin and the iston, seid connection comprising a cage itting Within the iston and having-ahned jecentvbearing sleeve, a threaded stem ex- `tendin',5g" beyond the end of each socket, the

piston hej/ing at the closed end thereof veon'nte,i'sunk openings through which "the Steins extend, nuts' engaging the stems Within the eountersunk portions ofthe openings, awesber closing each of the counten sunk openings at the end of the piston, and e screw engaging each stein to hold the washer in piane.

2.l lin combination with the piston; the

piston rod', and the Wrist pin, of a detachlble connection between 'the said' pin andv the piston, said connection comprising n onge lfittingy within the piston `end having ynlined bearing sleeves for the ends of the pin, and sockets extending from the cage,

said sockets being arranged in pairs, the member ofen-eh pan beuig on opposite sides neeofiee of the adjacent bearing' sieeve, each socket having n threaded stem extending beyond the end of the socket, the piston having :it the closed end thereoit oountersunk openings throughl whichl the stems extend, and nuts engaging 'the stems Within the oo nntesunk portionsof the opelfiings.` v n 3. In combination with the pieton, the piston rod and lthe Wrist pin, ot' detachable connection between the snidvpin and the piston, 'said connection comprising e Cage fitting within .the piston end having aiin'ed bearing sleeves for ythe ends of the pin, and threaded Steins connected with the cage end extending longitudinally of the piston, seid piston having openings at its.

closed end oi: receiving the stems, and nuts engaging the stems, the openings being' connteisunic to receive the nuts. i'

It., In"'co1nbinntion with tbe piston, the piston rod end the Wnistpin, of a detachebie connection between the said pin and the piston7 seid connection comprising e Cage fitting `Within the piston and @Living alined bearing sleeves foi1 the ends of the pin7 and threaded Steins connected with the onge :find extending iongitudineiiy of the piston, said pieton having openings et its olosed end for receiving the Sterns, and nuts engaging the stems.

= CLFTON LdWELLYN STNLFF. 

